What is stain's quirk?

Stain's quirk is called "Bloodcurdle." It allows him to paralyze his opponents by ingesting their blood, as long as their blood type matches his own. Stain can then immobilize his enemies by licking or ingesting their blood, making it difficult for them to fight back. This ability, coupled with Stain's impressive combat skills, makes him a formidable and dangerous opponent. Additionally, Stain's quirk also gives him enhanced physical abilities, such as increased speed and agility, making him a formidable hand-to-hand combatant.